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Editorial Team
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Asked: 2026-05-28T20:41:20+00:00

In bash I can do the following: $ printf foo\nbar\n | awk ‘{printf %s\n,

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In bash I can do the following:

$ printf "foo\nbar\n" | awk '{printf "%s\n", $1}'
foo
bar

… but in zsh when I do the same, I get this:

$ printf "foo\nbar\n" | awk '{printf "%s\n", $1}'
[m\n", printf}'foo
bar

What is it that I am doing wrong?

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1 Answer

  1. Editorial Team

    Are you by any chance using oh-my-zsh? there is a bug in the terminal setup that causes it to evaluate %-tags in commands like printf and date (and sub-commands $()!) due to prompt-expansion in the automatic terminal title setting.

    Have a look in ~/.oh-my-zsh/termsupport.sh and apply this change:

    *** termsupport.zsh.orig    2012-01-31 10:49:57.503119973 +0100
--- termsupport.zsh 2012-01-31 10:50:55.043118110 +0100
***************
*** 24,31 ****
  function omz_termsupport_preexec {
    emulate -L zsh
    setopt extended_glob
!   local CMD=${1[(wr)^(*=*|sudo|ssh|-*)]} #cmd name only, or if this is sudo or ssh, the next cmd
!   title "$CMD" "%100>...>$2%<<"
  }

  autoload -U add-zsh-hook
--- 24,35 ----
  function omz_termsupport_preexec {
    emulate -L zsh
    setopt extended_glob
!   local CMD_1=${1[(wr)^(*=*|sudo|ssh|-*)]} #cmd name only, or if this is sudo or ssh, the next cmd
!   local CMD_2=${2//\$\(/\\\$(} # ')}
!   CMD_1=${CMD_1//\%/%%}          
!   CMD_2=${CMD_2//\%/%%}          
!   #
!   title "${CMD_1}" "%100>...>${CMD_2}%<<"
  }

  autoload -U add-zsh-hook

    (Corresponding omz-issue https://github.com/robbyrussell/oh-my-zsh/issues/890)

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